If you anticipate a need to restore data to its previous version after you upgrade, follow the guidelines in this section to ensure that IQ files are saved before you upgrade.
Sybase recommends that you install Sybase IQ 12.6 to
a separate location from the directory where you installed previous Sybase IQ software.
Before you upgrade follow these steps to ensure that you can restore your data to its previous version.
Perform an IQ backup, as described in Chapter 13, “Backup and Data Recovery” in Sybase IQ System Administration Guide.
When you install Sybase IQ, install it in another directory, and follow the upgrade steps.
Restoring data to the previous Sybase IQ version
If you find that you need to go back to the previous version, follow these steps.
Change the environment variables to point at the older installation directories.
Start the utility database and restore the backup that you performed before the upgrade.
Stop the utility database and start the database that you restored.
